Idiom of the Day
play off (one group against another)
to match opposing persons or forces or interests for one`s own gain
Nobody likes the supervisor because he is always trying to play off one group of workers against another.
Hands Strong expressive part of body
Hands are expressive parts of the body, and because hands interact with other parts of the body. Hands contain many more nerve connections to the brain than most if not all other body parts. They are extremely expressive and flexible tools, so it is natural for hands to be used a lot in signalling.